Abstract
The physics reach of the Compact Muon Solenoid, under construction to study proton-proton collisions at a centre-of-mass energy of 14 TeV, is presented at design luminosity of 1034cm–2s–1 and beyond (1035cm–2s–1). The sensitivity for detection of the standard-model Higgs boson in the channels qqH (W fusion), WH, and tH is discussed with the result that the Higgs boson is observable in multiple decay modes over entire mass range, 0.1-1 TeV/c2. Higgs boson searches for decays involving taus in the context of the Minimal Supersymmetric Standard Model result in a limit of about 0.6 TeV/c2 at tanβ=25. Sparticle reconstruction for decays containing leptons and jets results in a squark/gluino mass reach in the range 2.5-3 TeV/c2. Limits on Kaluza-Klein excitations of the graviton or a new heavy vector boson are in the 5-6 TeV/c2 range. The scattering of vector bosons at high energy and discovery potential for compositeness is described. PACS: 11.30.Pb – 12.38.Qk; 12.60.Fr – 12.60.Fr – 12.60.Jv – 12.60.Rc – 14.60.Cd – 14.60.Ef – 14.60.Fg – 14.65.Fy – 14.65.Ha – 14.80.Bn – 14.80.Cp – 14.80.Ly – 14.70.Fm – 14.70.Hp – 14.70.Pw
Highlights
The standard model (SM) of particle physics has been constructed brick-by-brick over the last few decades by incorporating all available experimental information into one consistent, albeit incomplete, description of electroweak and strong interactions
In the big picture (Fig 1), Large Hadron Collider (LHC) physics may be viewed as the first look at the TeV/c2 mass scale to find a clue to the solution to the hierarchy problem... what lies between the electroweak scale and the Planck mass? In a somewhat more limited view, the LHC will explore the mechanism for electroweak symmetry breaking
Mass reach for MSSM Higgs bosons and gauginos are predicted to approach one TeV/c2 at design luminosity, extending to somewhat beyond at at super-high luminosity
Summary
The standard model (SM) of particle physics has been constructed brick-by-brick over the last few decades by incorporating all available experimental information into one consistent, albeit incomplete, description of electroweak and strong interactions. There remains but one necessary particle, the Higgs boson, to be discovered in order to complete our understanding of nature at energy scales below a few hundred GeV. It is implausible, to expect today’s SM to work at energy scales all the way to the Planck mass. In the big picture (Fig 1), LHC physics may be viewed as the first look at the TeV/c2 mass scale to find a clue to the solution to the hierarchy problem... The level-1 trigger hardware has a maximum output of 100 KHz and the highlevel trigger a maximum output of 100 Hz [5]-[6]
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